The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 1990
Filed:
Mar. 13, 1989
Hiroshi Ohmura, Higashi-Hiroshima, JP;
Mazda Motor Company, Hiroshima, JP;
Abstract
A rear wheel steering control system comprising a rear wheel steering mechanism, drive motor connected with said rear wheel steering mechanism for actuating the same, target setting means for setting a target steering angle of the rear wheels in accordance with a predetermined factor, motor control unit for controlling said drive motor so as to accomplish the target steering angle of the rear wheels, lock device for preventing the rear wheel steering mechanism from any steering movement when the target steering angle is substantially constant, release device for releasing the lock device to allow the steering movement of the rear wheel steering mechanism even when the target steering angle of the rear wheels is substantially constant under a predetermined condition, the control system is responsive in controlling the steering of the vehicle.